The Sensex opened on a firm note at 6,188 - up 25 points over the last close - and breached the 6,200-mark to touch an early high of 6,215 on impressive gains in most of the old and new economy stocks. It is now up 46 points at 6,209. The Nifty has also firmed up in the opening trades, and has moved up 13 points to 1,945.Reliance, after a weak outing on Tuesday, has added Rs 4 to Rs 506. While ITC has opened firm with a per cent gain (Rs 11) to Rs 1,270. HLL has commenced on a flat note at Rs 149.Infosys has logged 1.73% gains (Rs 33) to Rs 1,945. Wipro (up Rs 8 to Rs 665) and Satyam (up Rs 2 to Rs 386) have resumed in the green.SBI is up Rs 3 at Rs 585. HDFC Bank and ICICI Bank have clocked a per cent gain each to Rs 524 (up Rs 5) and Rs 346 (up Rs 2), respectively.Zee has gained 2.66% (Rs 4) to Rs 151.Grasim has advanced nearly 2% (Rs 22) to Rs 1,280. Tata Power and Tisco are up a per cent each at Rs 349 and Rs 372, respectively.